Kevan Miller was feeling VIOLENT on Tuesday -- the Boston Bruins player unleashed the fury all over multiple Buffalo Sabres players ... culminating with a KO in a mid-game fight!
The brutality began in the 2nd period when Miller came flying across the ice to smash Sabres' forward Rasmus Asplund into the boards at breakneck speed. Asplund went crumpling to the ground.
Asplund's teammates took issue with the shot because it looked like an illegal blindside hit -- even though it wasn't called for a penalty.